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https://github.com/mit-han-lab/lite-transformer
[ICLR 2020] Lite Transformer with Long-Short Range Attention
https://github.com/mit-han-lab/lite-transformer
nlp pytorch transformer
Last synced: about 1 month ago
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[ICLR 2020] Lite Transformer with Long-Short Range Attention
- Host: GitHub
- URL: https://github.com/mit-han-lab/lite-transformer
- Owner: mit-han-lab
- License: other
- Created: 2020-04-24T14:23:35.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2024-07-11T20:50:46.000Z (2 months ago)
- Last Synced: 2024-07-11T23:37:07.279Z (2 months ago)
- Topics: nlp, pytorch, transformer
- Language: Python
- Homepage: https://arxiv.org/abs/2004.11886
- Size: 1.32 MB
- Stars: 598
- Watchers: 20
- Forks: 80
- Open Issues: 9
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Lite Transformer
### [paper](https://arxiv.org/abs/2004.11886) | [website](https://hanlab.mit.edu/projects/litetransformer/) | [slides](https://hanlab.mit.edu/projects/litetransformer/Presentation_LiteTransformer.pdf)
```
@inproceedings{Wu2020LiteTransformer,
title={Lite Transformer with Long-Short Range Attention},
author={Zhanghao Wu* and Zhijian Liu* and Ji Lin and Yujun Lin and Song Han},
booktitle={International Conference on Learning Representations (ICLR)},
year={2020}
}
```
## Overview
## How to Use
### Prerequisite
* Python version >= 3.6
* [PyTorch](http://pytorch.org/) version >= 1.0.0
* configargparse >= 0.14
* For training new models, you'll also need an NVIDIA GPU and [NCCL](https://github.com/NVIDIA/nccl)
### Installation
1. Codebase
To install fairseq from source and develop locally:
```bash
pip install --editable .
```
2. Costumized Modules
We also need to build the `lightconv` and `dynamicconv` for GPU support.
Lightconv_layer
```bash
cd fairseq/modules/lightconv_layer
python cuda_function_gen.py
python setup.py install
```
Dynamicconv_layer
```bash
cd fairseq/modules/dynamicconv_layer
python cuda_function_gen.py
python setup.py install
```
### Data Preparation
#### IWSLT'14 De-En
We follow the data preparation in [fairseq](github.com/pytorch/fairseq). To download and preprocess the data, one can run
```bash
bash configs/iwslt14.de-en/prepare.sh
```
#### WMT'14 En-Fr
We follow the data pre-processing in [fairseq](github.com/pytorch/fairseq). To download and preprocess the data, one can run
```bash
bash configs/wmt14.en-fr/prepare.sh
```
#### WMT'16 En-De
We follow the data pre-processing in [fairseq](github.com/pytorch/fairseq). One should first download the preprocessed data from the [Google Drive](https://drive.google.com/uc?export=download&id=0B_bZck-ksdkpM25jRUN2X2UxMm8) provided by Google. To binarized the data, one can run
```bash
bash configs/wmt16.en-de/prepare.sh [path to the downloaded zip file]
```
#### WIKITEXT-103
As the language model task has many additional codes, we place it in another branch: `language-model`.
We follow the data pre-processing in [fairseq](github.com/pytorch/fairseq). To download and preprocess the data, one can run
```bash
git checkout language-model
bash configs/wikitext-103/prepare.sh
```
### Testing
For example, to test the models on WMT'14 En-Fr, one can run
```bash
configs/wmt14.en-fr/test.sh [path to the model checkpoints] [gpu-id] [test|valid]
```
For instance, to evaluate Lite Transformer on GPU 0 (with the BLEU score on test set of WMT'14 En-Fr), one can run
```bash
configs/wmt14.en-fr/test.sh embed496/ 0 test
```
We provide several pretrained models at the bottom. You can download the model and extract the file by
```bash
tar -xzvf [filename]
```
### Training
We provided several examples to train Lite Transformer with this repo:
To train Lite Transformer on WMT'14 En-Fr (with 8 GPUs), one can run
```bash
python train.py data/binary/wmt14_en_fr --configs configs/wmt14.en-fr/attention/multibranch_v2/embed496.yml
```
To train Lite Transformer with less GPUs, e.g. 4 GPUS, one can run
```bash
CUDA_VISIBLE_DEVICES=0,1,2,3 python train.py data/binary/wmt14_en_fr --configs configs/wmt14.en-fr/attention/multibranch_v2/embed496.yml --update-freq 32
```
In general, to train a model, one can run
```bash
python train.py [path to the data binary] --configs [path to config file] [override options]
```
Note that `--update-freq` should be adjusted according to the GPU numbers (16 for 8 GPUs, 32 for 4 GPUs).
### Distributed Training (optional)
To train Lite Transformer in distributed manner. For example on two GPU nodes with totally 16 GPUs.
```bash
# On host1
python -m torch.distributed.launch \
--nproc_per_node=8 \
--nnodes=2 --node_rank=0 \
--master_addr=host1 --master_port=8080 \
train.py data/binary/wmt14_en_fr \
--configs configs/wmt14.en-fr/attention/multibranch_v2/embed496.yml \
--distributed-no-spawn \
--update-freq 8
# On host2
python -m torch.distributed.launch \
--nproc_per_node=8 \
--nnodes=2 --node_rank=1 \
--master_addr=host1 --master_port=8080 \
train.py data/binary/wmt14_en_fr \
--configs configs/wmt14.en-fr/attention/multibranch_v2/embed496.yml \
--distributed-no-spawn \
--update-freq 8
```
## Models
We provide the checkpoints for our Lite Transformer reported in the paper:
| Dataset | \#Mult-Adds | Test Score | Model and Test Set |
|:--:|:--:|:--:|:--:|
| [WMT'14 En-Fr](http://statmt.org/wmt14/translation-task.html#Download) | 90M | 35.3 |[download](https://drive.google.com/open?id=10Iotg0dnt9sJTqEghtNhIIwJL1R3LYBe) |
| | 360M | 39.1 | [download](https://drive.google.com/open?id=10WMpIrdnDRWa_7afYJsqiiONdWlTLrJs) |
| | 527M | 39.6 | [download](https://drive.google.com/open?id=10Wfv80wOTkL-hkXNyxM8IVlcroHuuUvA) |
| [WMT'16 En-De](https://statmt.org/wmt16/translation-task.html#Download) | 90M | 22.5 | [download](https://drive.google.com/open?id=10ArxzUsMZ8gDe6zw5d3xTHYmeUasys1q) |
| | 360M | 25.6 | [download](https://drive.google.com/open?id=10Fd1iXFiOtuwjxm1K8S2RqiEeCuDhxYn) |
| | 527M | 26.5 | [download](https://drive.google.com/open?id=10HYj-rcJ4CIPp-BtpckkmYIgzH5Urrz0)|
| [CNN / DailyMail](https://github.com/abisee/cnn-dailymail) | 800M | 38.3 (R-L) | [download](https://drive.google.com/open?id=14sQZ_H7HMQGhL7Ko1WkktWUvbEslOeu9)|
| [WIKITEXT-103](https://einstein.ai/research/the-wikitext-long-term-dependency-language-modeling-dataset) | 1147M | 22.2 (PPL) | [download](https://drive.google.com/file/d/14gT1j5VERgtDFfo2Ef1yOiliT9Y2eKe_/view?usp=sharing)|